The American Association for Cancer Research (AACR) has published a study in the journal Cancer Epidemiology, Biomarkers and Prevention, stating the fact that rate of cancer-related deaths are declining in high-income countries but rising in underdeveloped countries around the world.
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The authors of the study note the incidence of reducing cancer deaths in developed nations may be linked to advanced detection techniques, improved screening methods, and reductions in smoking among other risk factors; while the rising incidence of cancer deaths in middle-income and low-income countries may be due to rising risk factors seen in those countries.
The researchers relied on the 2003-2007 data generated by the International Agency for Research on Cancer (IARC) Cancer Mondial database.
This IARC data was comprised of cancer incidence and mortality data from the Cancer Incidence in Five Continents – a partnership between the IARC and the International Association of Cancer Registries, as well as data generated via the World Health Organization Cancer Mortality database.
In all, the total data used for the latest research was representative of 50 countries which were used to typify different regions of the world where cancer cases occur most frequently.
Ultimately, the researchers observed a shift in the rise and fall of eight main cancer types – representing the 60% of most cancer cases and deaths worldwide. These kinds of cancers included breast, prostate, stomach, cervical, esophageal, colorectal, liver, and lung cancers.
"This study gives us important clues about the epidemiology of cancer and gives us some ideas about what we could further investigate to improve global public health," the authors of the study said.
Various data indicate that about 14.1 million new cancer cases were registered in 2012, and 8.2 million cancer deaths occurred in this same year. Considering the fact that cancer is a major killer globally, analysts say incidences may be on the rise in developing countries in response to population growths, aging, lifestyle changes, and other factors related to cancer risks.
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You can read the full report at AACR.